Precision, Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifiers ADA4610-2 Preliminary Technical Data Low TCVOS: 1 μV/°C typical Low input bias current: 5 pA typical at VS = ±15 V Dual-supply operation: ±4.5 V to ±18 V Low noise: 7.2 nV/√Hz typical at f = 1 kHz 0.7 μVP-P at 0.1 Hz to 10 Hz Low distortion: 0.000005% No phase reversal Rail-to-Rail Output Unity gain stable PIN CONFIGURATIONS OUT A 1 ADA4610-2 –IN A 2 +IN A 3 V– 4 Figure 1. 8-Lead LFCSP (CP Suffix) ADA4610-2 AD8512 8 V+ 7 OUT B TOP VIEW 6 –IN B (Not to Scale) 5 +IN B 02729-002 FEATURES Figure 2. 8-Lead SOIC_N (R Suffix) & 8-Lead MSOP (RM Suffix) APPLICATIONS Instrumentation Medical Instruments Multipole filters Precision current measurement Photodiode amplifiers Sensors Audio GENERAL DESCRIPTION The ADA4610-2 is a dual channel, precision JFET amplifier that feature low offset voltage, input bias current, input voltage noise, input current noise, and rail-to-rail output. The combination of low offsets, low noise, and very low input bias currents makes these amplifiers especially suitable for high impedance sensor amplification and precise current measurements using shunts. The combination of dc precision, low noise, and fast settling time results in superior accuracy in medical instruments, electronic measurement, and automated test equipment. Unlike many competitive amplifiers, the ADA4610 maintain their fast settling performance even with substantial capacitive loads. Unlike many older JFET amplifiers, the ADA4610-2 does not suffer from output phase reversal when input voltages exceed the maximum common-mode voltage range. Fast slew rate and great stability with capacitive loads make the ADA4610-2 a perfect fit for high performance filters. Low input bias currents, low offset, and low noise result in a wide dynamic range of photodiode amplifier circuits. Low noise and distortion, high output current, and excellent speed make the ADA4610-2 a great choice for audio applications. The ADA4610-2 is specified over the −40°C to +125°C extended industrial temperature range. The ADA4610-2A is available in 8-lead narrow SOIC, 8-lead MSOP, and 8-lead LFCSP packages. The ADA4610-2B is available in 8-lead narrow SOIC package. Rev. PrA Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2011 Analog Devices, Inc. All rights reserved. Preliminary Technical Data ADA4610-2 SPECIFICATIONS @ VS = ±15 V, VCM = 0 V, TA = 25°C, unless otherwise noted. Table 1. Parameter Symbol Conditions INPUT CHARACTERISTICS Offset Voltage VOS B-Grade −40°C < TA < +125°C A-Grade −40°C < TA < +125°C (B-Grade) −40°C < TA < +125°C (A-Grade) −40°C < TA < +125°C Offset Voltage Drift ΔVOS/ΔT Input Bias Current IB Min Typ Max Unit TBD 0.4 TBD 1 TBD TBD TBD TBD TBD TBD TBD TBD TBD +12.5 mV mV mV mV μV/°C μV/°C pA pA nA pA pA nA V dB dB dB dB Ω pF pF TBD 0.5 1 5 −40°C < TA < +85°C −40°C < TA < +125°C Input Offset Current IOS 2 −40°C < TA < +85°C −40°C < TA < +125°C Input Voltage Range Common-Mode Rejection Ratio CMRR Large-Signal Voltage Gain AVO Input Resistance Input Capacitance, Differential Mode Input Capacitance, Common Mode OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Output Current Closed-Loop Output Impedance POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Settling Time Total Harmonic Distortion (THD) + Noise Phase Margin NOISE PERFORMANCE Peak-to-Peak Voltage Noise Voltage Noise Density Current Noise Density VCM = ±12.5V −40°C < TA < +125°C RL = 2 kΩ, VO = ±13.5 V −40°C < TA < +125°C −12.5 TBD TBD TBD TBD RIN CINDM CINCM VOH VOL IOUT ZOUT PSRR ISY SR GBP tS THD + N φM en p-p en in 113 107 TBD 2.5 5.4 RL = 2 kΩ −40°C < TA < +125°C RL = 600 Ω −40°C < TA < +125°C RL = 2 kΩ −40°C < TA < +125°C RL = 600 Ω −40°C < TA < +125°C 14.8 TBD 14.2 TBD RL = 2 kΩ To 0.1%, 0 V to 10 V step, G = +1 To 0.01%, 0 V to 10 V step, G = +1 1 kHz, G = +1, RL = 2 kΩ 0.1 Hz to 10 Hz bandwidth f = 10 Hz f = 100 Hz f = 1 kHz f = 10 kHz f = 1 kHz Rev. PrA | Page 2 of 4 14.3 −14.8 -14.7 −14.7 TBD -14.6 TBD ±40 TBD TBD VS = ±2.5 V to ±18 V −40°C < TA < +125°C IO = 0 mA −40°C < TA < +125°C 14.9 TBD TBD 106 1.85 2 TBD 20 10 TBD TBD 0.000005 60 0.7 18 9.2 7.2 7.7 TBD V V V V V V V V mA Ω dB dB mA mA V/μs MHz μs μs % Degrees TBD TBD μV p-p nV/√Hz nV/√Hz nV/√Hz nV/√Hz fA/√Hz Preliminary Technical Data ADA4610-2 SPECIFICATIONS @ VS = ±5 V, VCM = 0 V, TA = 25°C, unless otherwise noted. Table 2. Parameter Symbol Conditions INPUT CHARACTERISTICS Offset Voltage VOS B-Grade −40°C < TA < +125°C A-Grade −40°C < TA < +125°C (B-Grade) −40°C < TA < +125°C (A-Grade) −40°C < TA < +125°C Offset Voltage Drift ΔVOS/ΔT Input Bias Current IB Min Max Unit TBD 0.4 TBD 1 TBD TBD TBD TBD TBD TBD TBD TBD TBD +2.5 mV mV mV mV μV/°C μV/°C pA pA nA pA pA nA V dB dB dB dB Ω pF pF TBD 0.5 1 TBD 5 −40°C < TA < +85°C −40°C < TA < +125°C Input Offset Current Typ IOS 2 −40°C < TA < +85°C −40°C < TA < +125°C Input Voltage Range Common-Mode Rejection Ratio CMRR Large-Signal Voltage Gain AVO Input Resistance Input Capacitance, Differential Mode Input Capacitance, Common Mode OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Output Current Closed-Loop Output Impedance POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Settling Time Total Harmonic Distortion (THD) + Noise Phase Margin NOISE PERFORMANCE Peak-to-Peak Voltage Noise Voltage Noise Density Current Noise Density VCM = ±2.5V −40°C < TA < +125°C RL = 2 kΩ, VO = ±3.5 V −40°C < TA < +125°C −2.5 TBD TBD TBD TBD RIN CINDM CINCM VOH VOL IOUT ZOUT PSRR ISY SR GBP tS THD + N φM en p-p en in 110 107 TBD 2.5 5.4 RL = 2 kΩ −40°C < TA < +125°C RL = 600 Ω −40°C < TA < +125°C RL = 2 kΩ −40°C < TA < +125°C RL = 600 Ω −40°C < TA < +125°C 4.8 TBD 4.2 TBD RL = 2 kΩ To 0.1%, 0 V to 4 V step, G = +1 To 0.01%, 0 V to 4 V step, G = +1 1 kHz, G = +1, RL = 2 kΩ 0.1 Hz to 10 Hz bandwidth f = 10 Hz f = 100 Hz f = 1 kHz f = 10 kHz f = 1 kHz Rev. PrA | Page 3 of 4 4.3 −4.8 -4.7 −4.7 TBD -4.6 TBD TBD TBD TBD VS = ±2.5 V to ±18 V −40°C < TA < +125°C IO = 0 mA −40°C < TA < +125°C 4.9 TBD TBD 106 1.85 2 TBD 20 10 TBD TBD 0.000005 60 0.7 18 9.2 7.2 7.7 TBD V V V V V V V V mA Ω dB dB mA mA V/μs MHz μs μs % Degrees TBD TBD μV p-p nV/√Hz nV/√Hz nV/√Hz nV/√Hz fA/√Hz Preliminary Technical Data ADA4610-2 ABSOLUTE MAXIMUM RATINGS Table 4. Thermal Resistance Table 3. Parameter Supply Voltage Input Voltage Output Short-Circuit Duration to GND Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature (Soldering, 10 sec) Electrostatic Discharge (Human Body Model) Rating ±18 V ±VS Observe derating curves −65°C to +150°C −40°C to +125°C −65°C to +150°C 300°C 2000 V Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Type 8-Lead MSOP (RM) 5-Lead SOT23 (RJ) 8-Lead LFCSP (CP) 8-Lead SOIC_N (R) 14-Lead SOIC_N (R) 16-Lead LFCSP (CP) 1 θJA1 142 190 TBD 120 115 TBD θJC 45 92 TBD 45 36 TBD Unit °C/W °C/W °C/W °C/W °C/W °C/W θJA is specified for worst-case conditions, that is, θJA is specified for device soldered in circuit board for surface-mount packages. This was measured using a standard 4-layer board. ESD CAUTION Rev. PrA | Page 4 of 4 PR09646-0-1/11(PRA)